词根：-ped-

【词根含义】：足;儿童

【词根来源】：原始印欧语ped-,pod-(足)在希腊语中的派生词有pous(足)和pedon(土壤,儿童,足);在拉丁语中的派生词有pes, ped.is, m(足)和pod.ium(阳台,剧场的包厢)等。

【同源单词】：biped, centipede, expedient, expedite, expedition

前缀：e-, ex-

【词根含义】：出,向外;向上

【词根来源】：e-用在b, c, d, g, j, l, m, n, r, v前;ex-用在s前时,s常省略。来源于拉丁语前缀ex-。

【同源单词】：edit, edition, editor, editorial, educate

词根词缀：ped-, pedi-, -pedal, -ped, -pede, -pedia

【来源及含义】Latin: foot, feet; people often see this ped element in other words. When people refer to "pedal extremities", they mean "feet". When anyone pushes the pedals of a bicycle, it is done with the feet. A pedestrian must use the feet for walking. A quadruped has four feet while a centipede has "100 feet"; or a large number of them because it may be impossible to count all of them.

【相关词根词缀】 Related "foot, feet" units: melo-; planta-; podo-; -pus.

【同源单词】aliped, anguiped, anomaliped, biped, bipedal, bipedal

词根词缀：-tion

【来源及含义】Latin: a suffix forming nouns from verbs of condition and action; an act or process: resumption, absorption; state or condition, redemption, exhaustion; something resulting from or otherwise related to an act or process, assumption, friction

【相关描述】This unit is presenting a small fraction of the hundreds of words ending with the suffix of -tion; however, there is a significant number of words which may help everyone have a better understanding and appreciation of the use of this element.

【同源单词】abduction, abjection, ablution, ablution, abolition, abruption